I leave nothing in my egg that isn't bolted down that is of any value or has even a small temptation level for thieves. They can take blocks of wood, old tools and even my second (3rd and 4th) hand dishes without me cryin'. Electronics are another thing.
I googled your tv, and can't see clearly how it mounts, but it looks like it is bolted in? If so, I wouldn't worry about it.
I haven't installed that particular model, but I have a msall lcd tv permanently mounted on the side of my kitchen cabinet over the dinette. It is mounted similar to a recessed ceiling light
, so it would be hard to get out and still be functional, but, as with any thing or place, if someone wants it bad enough, they will find a way.